John Coffin Profile Topics Started Replies Created Engagements Favourites Search topics: Forum Topics Started Viewing 16 topics - 1 through 16 (of 16 total) Topic Voices Posts Last Post Alpy 200, what minimum size scope for supernova ID? Started by: John Coffin in: Spectroscopy 2 3 2 months ago John Coffin Swan Bands in Comet and Carbon star compared Started by: John Coffin in: Spectroscopy 1 1 5 months, 3 weeks ago John Coffin Where is the ARAS spectroscopy forum now? Started by: John Coffin in: Spectroscopy 2 3 7 months, 2 weeks ago John Coffin ARAS symbiotic target list for Astroplanner Started by: John Coffin in: Spectroscopy 1 1 2 years, 3 months ago John Coffin Lodestar Pro, has anyone used one? Started by: John Coffin in: Imaging 4 5 3 years, 6 months ago Grant Privett Online spectroscopy workshops at AAVSO Started by: John Coffin in: Spectroscopy 1 1 3 years, 10 months ago John Coffin UV Aurigae, where can I find out more? Started by: John Coffin in: Spectroscopy 4 5 5 years, 4 months ago Robin Leadbeater List of campaigns? Started by: John Coffin in: Spectroscopy 5 7 5 years, 7 months ago John Coffin What wavelength error is acceptable with an Alpy? 1 2 3 Started by: John Coffin in: Spectroscopy 5 53 5 years, 8 months ago Robin Leadbeater What altitude for reference star? Started by: John Coffin in: Spectroscopy 3 5 5 years, 8 months ago John Coffin Unable to calibrate a spectrum in ISIS Started by: John Coffin in: Spectroscopy 2 19 5 years, 9 months ago Robin Leadbeater New Atik 460, does it have too many hot pixels? Started by: John Coffin in: Spectroscopy 3 6 5 years, 10 months ago John Coffin Psi Persei, emission lines in Fe II ? Started by: John Coffin in: Spectroscopy 5 9 6 years, 4 months ago John Coffin DSLR spectra Processing in ISIS Started by: John Coffin in: Spectroscopy 2 8 6 years, 5 months ago John Coffin How do you find your target? Started by: John Coffin in: Spectroscopy 9 18 6 years, 6 months ago Mr Jack Martin Best camera for Alpy 600? Started by: John Coffin in: Spectroscopy 3 4 6 years, 8 months ago John Coffin Viewing 16 topics - 1 through 16 (of 16 total)